Science: TheFall-OutandC 14

For the world's generals and statesmen, the radioactive "fallout" from
nuclear explosions is a grave worry for the future. For scientists who
date ancient objects by Carbon 14. it is already a serious nuisance and
threatens to get worse. Southwestern laboratories near the Nevada
atom-bomb testing ground have found it impossible to use Carbon 14;
there is too much competing radioactivity in their vicinity. Even on
the Eastern seaboard, Carbon 14 work at the University of Pennsylvania
has often been stopped by a radioactive cloud drifting slowly overhead.
The "background radiation" gets so...